In this abstract, we analyze public sentiment variations on Twitter and mine possible reasons behind such variations. To track public sentiment, we combine two state-of-the-art sentiment analysis tools to obtain sentiment information towards interested targets (e.g., “Obama”) in each tweet. Based on the sentiment label obtained for each tweet, we can track the public sentiment […]
Archives for March 2015
CARP SCHEME FOR SECURITY PRIMITIVE BASED ON HARD AI PROBLEMS
Using hard AI (Artificial Intelligence) problems for security is an exciting new paradigm. Under this paradigm, the most notable primitive invented is Captcha, which distinguishes human users from computers by presenting a challenge, i.e., a puzzle, beyond the capability of computers but easy for humans. Captcha is now a standard Internet security technique to protect […]